[RFC] ui-repolist: Allow sections to be collapsible

[Andy Doan]

This is a rough work-in-progress, but I wanted to get our take on whether
or not you'd be interested in this type of functionality:

The index page can be difficult to navigate for really large git
servers. This change allows a configuration like:

 section-collapse=people
 section-collapse=tests

And an index page would only display the "people" and "test" section
headers entries (not their repos) with a hyperlink that can be used to
drill down into each section.

Signed-off-by: Andy Doan <andy.doan at linaro.org>
---
 cgit.c        | 2 ++
 cgit.h        | 1 +
 cgitrc.5.txt  | 5 +++++
 ui-repolist.c | 4 +++-
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/cgit.c b/cgit.c
index 9427c4a..abecc64 100644
--- a/cgit.c
+++ b/cgit.c
@@ -238,6 +238,8 @@ static void config_cb(const char *name, const char *value)
 			scan_tree(expand_macros(value), repo_config);
 	else if (!strcmp(name, "scan-hidden-path"))
 		ctx.cfg.scan_hidden_path = atoi(value);
+	else if (!strcmp(name, "section-collapse"))
+		string_list_insert(&ctx.cfg.section_collapse, xstrdup(value));
 	else if (!strcmp(name, "section-from-path"))
 		ctx.cfg.section_from_path = atoi(value);
 	else if (!strcmp(name, "repository-sort"))
diff --git a/cgit.h b/cgit.h
index 325432b..5c654be 100644
--- a/cgit.h
+++ b/cgit.h
@@ -251,6 +251,7 @@ struct cgit_config {
 	int renamelimit;
 	int remove_suffix;
 	int scan_hidden_path;
+	struct string_list section_collapse;
 	int section_from_path;
 	int snapshots;
 	int section_sort;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 9fcf445..2762657 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -404,6 +404,11 @@ section::
 	after this option will inherit the current section name. Default value:
 	none.

+section-collapse::
+	Name of a section to "collapse" and not display on the index page.
+	Multiple config entries can be specified and each one will be
+	collapsed.
+
 section-sort::
 	Flag which, when set to "1", will sort the sections on the repository
 	listing by name. Set this flag to "0" if the order in the cgitrc file should
diff --git a/ui-repolist.c b/ui-repolist.c
index 30915df..330f749 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -322,10 +322,12 @@ void cgit_print_repolist(void)
 		     strcmp(section, last_section)))) {
 			htmlf("<tr class='nohover'><td colspan='%d' class='reposection'>",
 			      columns);
-			html_txt(section);
+			htmlf("<a href='%s'>%s</a>", section, section);
 			html("</td></tr>");
 			last_section = section;
 		}
+		if (section && string_list_has_string(&ctx.cfg.section_collapse, section))
+			continue;
 		htmlf("<tr><td class='%s'>",
 		      !sorted && section ? "sublevel-repo" : "toplevel-repo");
 		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
--
2.7.4